*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #f7f7f5;--surface: #ffffff;--border: rgba(0, 0, 0, .08);--border-md: rgba(0, 0, 0, .14);--text: #1a1a18;--text-2: #6b6b68;--text-3: #9a9a96;--green-bg: #eaf3de;--green: #3b6d11;--amber-bg: #faeeda;--amber: #854f0b;--red-bg: #fcebeb;--red: #a32d2d;--radius: 10px}@media (prefers-color-scheme: dark){:root{--bg: #1a1a18;--surface: #242422;--border: rgba(255, 255, 255, .08);--border-md: rgba(255, 255, 255, .14);--text: #f0ede8;--text-2: #9a9a96;--text-3: #6b6b68;--green-bg: #173404;--green: #97c459;--amber-bg: #412402;--amber: #ef9f27;--red-bg: #501313;--red: #f09595}}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased}.topbar{position:fixed;top:0;left:0;right:0;height:52px;display:flex;align-items:center;justify-content:space-between;padding:0 20px;background:var(--bg);border-bottom:1px solid var(--border);z-index:10}.topbar-title{font-size:14px;font-weight:500;color:var(--text)}.topbar-actions{display:flex;gap:6px}.app{min-height:100vh}.main{padding:0 16px 80px;max-width:640px;margin:0 auto;transition:padding-top .3s}.main-center{display:flex;align-items:center;justify-content:center;min-height:100vh;padding-top:0}.main-top{padding-top:72px}.hero{display:flex;flex-direction:column;align-items:center;text-align:center;gap:10px}.hero-icon{width:52px;height:52px;border-radius:14px;background:var(--surface);border:1px solid var(--border-md);display:flex;align-items:center;justify-content:center;color:var(--text-2);margin-bottom:6px}.hero h1{font-size:22px;font-weight:500;letter-spacing:-.3px}.hero p{font-size:14px;color:var(--text-2);margin-bottom:8px}.btn-start{margin-top:8px;padding:0 28px;height:42px;border-radius:var(--radius);background:var(--text);color:var(--bg);border:none;font-size:15px;font-family:inherit;cursor:pointer;transition:opacity .15s}.btn-start:hover{opacity:.82}.btn-start:active{opacity:.7}.btn-ghost{padding:0 14px;height:32px;border-radius:8px;background:transparent;color:var(--text-2);border:1px solid var(--border-md);font-size:13px;font-family:inherit;cursor:pointer;transition:background .12s,color .12s}.btn-ghost:hover{background:var(--surface);color:var(--text)}.progress-wrap{padding:24px 0 20px}.progress-track{height:2px;background:var(--border-md);border-radius:2px;overflow:hidden}.progress-fill{height:100%;background:var(--text);border-radius:2px;transition:width .25s ease}.progress-label{margin-top:10px;font-size:12px;color:var(--text-3);text-align:center}.results{display:flex;flex-direction:column;gap:8px;padding-top:8px}.config-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:12px 14px;display:flex;align-items:center;gap:12px;transition:border-color .12s}.config-card:hover{border-color:var(--border-md)}.ping-badge{min-width:60px;text-align:center;padding:3px 10px;border-radius:6px;font-size:12px;font-weight:500;flex-shrink:0;font-variant-numeric:tabular-nums}.ping-fast{background:var(--green-bg);color:var(--green)}.ping-mid{background:var(--amber-bg);color:var(--amber)}.ping-slow{background:var(--red-bg);color:var(--red)}.config-info{flex:1;min-width:0}.config-tag{font-size:13px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.config-host{font-size:11px;color:var(--text-3);margin-top:1px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.copy-btn{flex-shrink:0;padding:0 12px;height:28px;border-radius:6px;border:1px solid var(--border-md);background:transparent;color:var(--text-2);font-size:12px;font-family:inherit;cursor:pointer;transition:all .12s;white-space:nowrap}.copy-btn:hover{background:var(--surface);color:var(--text)}.copy-btn.copied{border-color:var(--green);color:var(--green);background:var(--green-bg)}.done-row{margin-top:20px;text-align:center}.done-label{font-size:12px;color:var(--text-3)}.empty{display:flex;flex-direction:column;align-items:center;padding:60px 0;font-size:14px;color:var(--text-2)}.error{font-size:13px;color:var(--red);margin-top:4px}